We experimentally demonstrate the dual-channel wavelength conversion and format conversion from 2×25 Gbps DQPSK signals to 2×12.5 Gbps DPSK based on FWM in SOA using only one pump. About 0.5-dB sensitivity improvement at FEC threshold for DPSK1 is achieved and 0.4-dB power penalty is paid for DPSK2.

© 2014 Optical Society of America

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